Thermostatically controlled hot end fan and Slic3r M107



  • Hi i have a thermostatically controlled hot end fan,
    I use slic3r but the gcode it generates for the printer fan will also stop the hotend fan.
    Is there any way to, change the firmware to not stop the thermostatically controlled hot end fan when a M107 is send or let slicer generate M106 s0 commands to stop the printing fan?

    This is in my config file :

    ; Tool definition section
    M563 P0 D0 H1 F3 ; Define tool 0 to use extruder drive 0 and heater 1 T0
    G10 P0 X0 Y0 Z0 S0 R0 ; Set tool 0 operating and standby temperatures

    M106 P0 T45 H1 ;This sets fan 0 to run any time the temperature of heater 1 is above 45 Celsius.
    M106 P1 T45 H2 ;This sets fan 1 to run any time the temperature of heater 2 is above 45 Celsius.


  • administrators

    You should configure just fan 1 to be the thermostatic one (which it is by default anyway) and leave fan 0 as the print cooling fan. If you have 2 hot ends each with a hot end fan, either use fan 1 and 2 outputs to control them, or connect them both in parallel to fan 1 output.


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